使用ISE的XST综合，综合结果使用了Block RAM，当然有时对于用到的容量很小的RAM，我们并不需要其使用Block RAM，那么只要稍微修改一下就可以综合成Distribute RAM-The use of ISE s XST synthesis, the combined result of the use of the Block RAM, it is our expectation. Of course, sometimes the capacity to use a very small RAM, we do not need its use Block RAM, as long as a slight change it can be integrated into Distribute RAM